Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal sCEj– : Sustainable Civil Engineering Journal
Kusuma, Wirahadi
Institut Agama Islam Negeri Bengkulu
Civil Engineering, Building, Construction & Architecture Transportation

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Kajian Metode Geofisika Seismik Refraksi Untuk Karakterisasi Lapisan Tanah Dalam Penentuan Bedrock Area Bendungan Kusuma, Wira Hadi
Sustainable Civil Engineering Journal Vol 2 No 1 (2025): Volume 2 Nomor 1 2025
Publisher : Department of Civil Education FT UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Identification of bedrock is a crucial aspect in dam construction planning. This study aims to determine the depth and characteristics of subsurface layers using the seismic refraction method. The survey was conducted along a 69-meter profile using 24 geophones spaced 3 meters apart and five energy source shots. First arrival times were picked using DOSBox software and interpreted with Seisrefa to generate a subsurface velocity model. The results revealed two main layers. The first layer exhibited a P-wave velocity of 0.64 km/s, interpreted as loose soil or weathered volcanic material. The second layer showed a velocity of 2.5 km/s with a depth of up to 12.5 meters, identified as bedrock consistent with the lithology of the Waturanda Formation, consisting of breccia and tuffaceous sandstones from deep marine deposits. In conclusion, the seismic refraction method is effective in mapping subsurface structures and identifying bedrock. However, heterogeneity caused by the riverbank location of the survey requires additional verification using borehole data or Standard Penetration Test (SPT) to accurately determine layer thickness and lithology.
Co-Authors